room air

noun

The natural, unassisted air that humans breathe in everyday environments; it contains a stable concentration of approximately 21% oxygen.

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Meanings

nounroom air (plural room airs)

plural room airs

  1. medicineThe natural, unassisted air that humans breathe in everyday environments; it contains a stable concentration of approximately 21% oxygen.
Cite this entry
APA

room air. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/room%20air

MLA

“room air.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/room%20air. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “room air,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/room%20air.

Source: room air on Wiktionary, CC BY-SA 4.0.